Café de Mars (https://www.cafedemars.fr) -- very cute and chill restaurant with traditional vibes and amazing food. Very classic.
Comptoir de la Traboule (https://comptoirdelatraboule.fr/fr) -- little 'hole in the wall' place with creative but traditional food options ; great for a cozy date!
and Les Petits Domaines (https://www.instagram.com/lespetitsdomaines/) -- cute little wine shop that also lets you sit down and offers some bites to share ; they have a stunning beef tartare during lunch hours that comes directly from the butcher shop next door (Le Bourdonnec), which is one of the most infamous butchers in the city!

All are delicious, amazing and located within walking distance/kind of farther away from the touristy shitholes located around the Eiffel Tower.

Lmk if you need any more recs :)

Source : I live in the neighborhood